Hypoxanthine-guanine phosphoribosyltransferase HPRT deficiency

Synonyms:

Hypoxanthine-guanine phosphoribosyltransferase HPRT deficiency a.k.a. Lesch-Nyhan disease

Diagnosis:

Genetics:

  • X-linked
  • Protein= hypoxanthine-guanine phosphoribosyltransferase HPRT

Clinical features:

Dystonia, athetosis,
Self mutilation (lip & finger biting)
Mental retardation (learning disability)
Severe gout, renal failure

Findings on investigations:

Uric acid: high

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